Acetylene-bubjter



G. P. WASHBURN.

ACETYLENE BURNER.

APPLICATION FILED NOV. 14, ms.

Patented July 29, 1919.

I N VEN TOR. 650%: f. MSHBUR/V f ATTORNEYS.

. Burners, of which fication.

GEORGE P. WASHBURN, OF LOS ANGELES, CALIFORNIA.

ACETYLENE-BUBN'ER.

Specification of Letters Patent. Patented July 29, 1919.

Application filed November 14, 1918 Serial No. 262,540.

To all whom it may concern B eit known that I, GEORGE P. WASHBURN, a citizen. of the United States, residing at -Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Acetylenethe following is a speci- My invention relates to an acetylene burner.

. An object of my invention is to provide an acetylene burner adapted for directing I a pointed flame against a metal surface or joint as is done in cutting and welding metal sheets and similar work..

Another object is to provide an acetylene burner which will-produce a proper air and gas mixture for complete combustion and a consequent high degree of heat.

With these and other objects in view,

which will appear as the description proceeds, my invention consists in the construct1on,comb1nat1on and arrangement-of parts hereinafter described and claimed.

' vention.

In the accompanying drawings which form a part of this specification,

' Figure l is a, fragmentary view of an acetylene generator provided with a valve fitting-to which is connected an acetylene burner embodylng the principles of my in- Fig. 2 is a central longitudinal section through the burner shown in Fig. 1 taken on the-line 2-'-2 of Fig, 1.

Fig. 3 is an end view of the burner shown in Flg. 2 as seen looking in the direction indicated by arrow 3 in, Fig. 2.

Fig. 4 is an enlarged fragmentary sectional view taken on the line 4-4 of Fig. 2 showing the construction of the burner nozzle. 1

As indicated by the reference numerals, 10 is an acetylene generator gas dome equipped f with a delivery tube 11 within which is a control valve operated by a handle 12. The delivery tube 11 is provided with a branch opening 13 in which a valve fitting 14 is screwed. This fitting has an acetylene outlet connection 15 to which a connecting pipe 16 is joined and an air inlet connection 17 to which a compressed air pipe 18 is joined. A needle valve 19 which controls the admission of air turns in the upper part of the fitting. The burner 20 is screwed into the connecting pipe 16. The burner proper consists of a circular base casting 21 its point. The reflected mixture or thus meets the diveifinfg with a boss 22 anda central bore 23 around,

which a series of equally spaced holes 24 converging from the outer to the imier part of the burner are drilled. The boss 22 has an enlarged bore tapped to receive the end of a p1pe 25 which connects with the connecting pipe 16..

The inner end of the central bore 23 is tapped to receive a nozzle 26, said nozzle 'being a tube with atapering point 27 having a central vent 28. Three or more equally spaced small holes 29 are drilled through the nozzle wall back of the tapered point at an angle of approximately 45 to the,

zle and the sleeve 30. A series of equally spaced holes 32 are drilled through the space 31 is, therefore, left between the nozsleeve wall around the-sleeve 30 slightly forward of thebasecastin'g 21.

Operation: Theburner .is started with the valve operated by handle 12 closed and by 0 ening valve 19 which will admit theair w liich' is under considerable pressure. Now a small quantity'of acetylene is admitted by turnin the-handle 12 and the mixture is ignite at the open end of the burner 20. The quantities of acetylene and air are controlled by the handle 12 and the valve 19 respectively so that the size of the flame issuing from the open end of the burner nozzle may be regulated as desired. Ordinarily the valve 19 reduces the air pressure to about a quarter of a pound. The mixture of acetylene and air issues from the nozzle with considerable force and draws air through the base holes 24 and sleeve holes 32. The mixture flows out of the central opening 28 in a diverging jet, it also flows through the divergin holes 29 and strikes'the inner surface 0 the sleeve 30 at such an angle that it is reflected toward the nozzle axis be ond ame central jet some distance from the en the tube and produces a pointed flame, as is indicated bythe dotted lines in 4. This arrangement of a nozzle within asleeve and the provision timate and thorough mixture of air and purposes.

is complete combustion and a consequen flame which when'applied in th form o f a.

converging point is very eficctive'for use in melting metals or heati g them forweldmg While I have shown the preferred construction of my acetylene burner, as now known to me, it will be understood that various changes in construction, and arr-an ement of parts may be made by those skil I claim; 7 -1. An acetylene burner comprising a circular base casting provided with an internally threaded central boss adapted to connect with a delivery pipe, said base casting having a central bore and a circular series of inwardly converging holes, said circular series of holes being concentric with said central bore, a nozzle fixed in said central bore, said nozzle having a tapered end which has a primary central vent and having a series of outwardly diverging secondary vents around and back of said central vent, and an enveloping sleeve attached to said base casting with its open end extending beyond said nozzle so as to deflect the gases issuing from said divergin vents toward ,the nozzle axis, said enve oping sleevehaving a series of equally spaced air inlet holes near said base casting.

- 2. An acetylene burner comprising a base having a central bore and a circular series of inwardly converging holes concentrlc with the bore; a nozzle fixed in the central bore, said nozzle having a tapered end which has a primary centra 1 vent and a series of outwardly diverging secondary vents. around combination ed in the art without departingv from the spirit of my invention as claimed. a central axlal'bore,

with a central axial bore,

the outer end of said sleeve, the outer end of tubular said nozzle being closed and provided with said nozzle having a series of lateral radial bores outwardly inclined from the vertical, so that the flames issuing therefrom will impinge points ar-v ranged in a circle on the inner side of said sleeve; means for supplying a mixture of gas and air under pressure to said nozzle; and means for supplying air to the interior of said sleeve and in the rear of the outer end of said nozzle. p

4. A gas burner, comprising a tubular sleeve circular in cross section, a tubular burner nozzle disposed axially therein, the

outer nd of said nozzle being spaced from the outer end of said sleeve, the outer end of said nozzle being closed and provided said nozzle having a series of lateral radial bores outwardly inclined from the vertical, so that the flames issuing therefrom will impinge points ar-,

ranged in a circle sleeve; and means of as and air under pressure to said nozzle.

11 testimony whereof I have signed my name to this specificaltion'.

GEORGE P. WASHBURN.

on the inner side of said for supplying a mixture 

